# Square Miles, Hectares, Decares and Ares Conversion

Quick Lookup (Round: 2). mi² to ha

 mi² 1/8 1/4 1/2 3/4 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 60 70 80 90 100 ha 32.37 64.75 129.5 194.25 259 388.5 518 647.5 777 906.5 1036 1165.49 1294.99 1424.49 1553.99 1683.49 1812.99 1942.49 2071.99 2201.49 2330.99 2460.49 2589.99 2848.99 3107.99 3366.98 3625.98 3884.98 4143.98 4402.98 4661.98 4920.98 5179.98 5438.98 5697.97 5956.97 6215.97 6474.97 6733.97 6992.97 7251.97 7510.97 7769.96 8028.96 8287.96 8546.96 8805.96 9064.96 9323.96 9582.96 9841.95 10101 10360 10619 10878 11137 11396 11655 11914 12172.9 12431.9 12690.9 12949.9 15539.9 18129.9 20719.9 23309.9 25899.9
Round:
Enter Square Mile
Enter Hectare
Enter Decare
Enter Are

## How many hectares in a square mile?

1 Square mile (mi²) is equal to 258.99881103 hectares. To convert square miles to hectares, multiply the square mile value by 258.99881103.

For example, to find out how many hectares in a square mile and a half, multiply 1.5 by 258.99881103, that makes 388.5 hectares in a square mile and a half.

1 Square Mile = 258.99881103 Hectares

## How many decares in a square mile?

1 Square mile is equal to 2589.9881103 decares. To convert square miles to decares, multiply the square mile value by 2589.9881103.

1 Square Mile = 2589.9881103 Decares

## How many ares in a square mile?

1 Square mile is equal to 25899.881103 ares. To convert square miles to ares, multiply the square mile value by 25899.881103.

1 Square Mile = 25899.881103 Ares

You may also use this area units conversion calculator tool to convert between hectares, square miles and all area measurement units.

What is Square Mile?

Square mile is an imperial and United States Customary systems area unit and defined as a square with all sides are one mile in length. The symbol is "mi²".

• 1 Square Mile = 258.99881103 Hectares
• 1 Square Mile = 2589.9881103 Decares
• 1 Square Mile = 25899.881103 Ares

What is Hectare?

Hectare is a metric system area unit. 1 Hectare is equal to 10000 m². The symbol is "ha".

• 1 Hectare = 10 Decares
• 1 Hectare = 100 Ares
• 1 Hectare = 0.0038610215855 Square Mile

What is Decare?

Decare is a metric system area unit. 1 Decare is equal to 1000 m². The symbol is "daa".

• 1 Decare = 0.1 Hectare
• 1 Decare = 10 Ares
• 1 Decare = 0.00038610215855 Square Mile

What is Are?

Are is a metric system area unit. 1 Are is equal to 100 m².

• 1 Are = 0.01 Hectare
• 1 Are = 0.1 Decare
• 1 Are = 0.000038610215855 Square Mile
Create Conversion Table
Click "Create Table". Enter a "Start" value (5, 100 etc). Select an "Increment" value (0.01, 5 etc) and select "Accuracy" to round the result.